ASEAN Defense Secretary Jim Mattis meets with the defense ministers and delegation heads of the Association of Southeast Asian Nations during the 16th Shangri-La Dialogue Asia security summit in Singapore, June 4, 2017. DOD photo by Air Force Staff Sgt. Jette Carr SHARE IMAGE: Download Image: Full Size (1.01 MB) Photo By: Air Force Staff Sgt. Jette Carr VIRIN: 170604-D-GY869-014.JPG Photo Gallery